Meet Our Experts
Our Principals
Brad Brechwald, PE, PLS
CEO, President
Thomas Zehnder, PE
Principal
Jorge Aguilar, PE
Principal
Robert Miller, PE
Principal
Kari Wagner, PE
Principal and Director of Water Resources
Josh Whipple
Senior Mechanical Designer
Jenni Metzger
Project Analyst
Sarah Huffman, PE
Civil Engineer
Suzanne Baird. PLA 6114
Landscape Architect
Matt Valez
Office Manager
Bill Lindahl
Senior Mechanical Engineer
Kathy Redden
Executive Assistant
Gabriela Mendoza
Marketing Coordinator
Ryan Burmaster
Survey Technician
Jenna Mitchell
Human Resources Manager
Anthony Lehman
Assistant Resident Engineer
Zachary Teske, PE
Director of Construction Management
Travis Vasquez, PE
Associate Engineer
Julie Rae Wilson
Controller
Brett Hadley, PE, QSD/P
Senior Civil Engineer
Craig A. Campbell, PE, PLS
Consulting Engineer
Wen Bin Sullivan, PE
Civil Engineer
Glenn Rider
Senior Environmental Compliance Specialist
Olivia Williams
Associate Engineer
Samar Saliba
Accounting
Ann Sever, PLA 4038
Senior Landscape Architect
Zac Powell, EIT
Associate Engineer
Skye Thomas, PLS
Senior Land Surveyor
Cris Disarufino
Senior Civil Designer
Rachel Hawthorne, PE
Director of Civil and Transportation Engineering
Ralph Schell
Senior Civil Designer
Marco Castaneda, PLS
Professional Land Surveyor
Tim Peterson
Project Analyst Compliance Inspector
Luz Garcia, PLS
Professional Land Surveyor
Greg Hulburd, PE, QSD/P
Civil Engineer
Michael Hausman, PE
Civil Engineer
Alvaro Escobedo
Associate Engineer
Alexandra Cass
Associate Engineer
Elvira Morla-Camacho, PE, QSD/P
Senior Civil Engineer
John Wallace, PE
Consulting Engineer
Zachary Caipang, EIT
Associate Engineer
Valerie Huff, PE
Senior Civil Engineer
Bill Callahan
Senior Environmental Compliance Specialist
Bryce Dilger, PLS
Senior Land Surveyor II
Erik Rutherford, PE
Senior Mechanical Engineer
Nate Whitcare, PE
Senior Designer
Daniel Herrera
Survey Technician I
Lonnie Richardson
Senior Project Analyst
Paula Cappiello
Senior Accountant
Conner Kelly, PE
Associate Engineer
Nancie L. Adams, PE
Senior Civil Engineer
Zach Markow, PE
Civil Engineer
Ethan Pence, PE
Civil Engineer
Tony Scalise
Assistant Resident Engineer
George Marchenko, PLS
Senior Land Surveyor
Clayton Bradshaw, PE, PLS
Director of Surveying
Bryan Childress, PE
Senior Mechanical Engineer
Mark Madonna, PE
Survey Technician
Nick Sine, LSIT
Survey Technician
Steven Tanaka, PE, CSI, CCS
Principal Civil Engineer
Matt Wilkins, PLA, ASLA, APA
Director of Landscape Architecture
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